Keepon is a small yellow robot designed to study social development by interacting with children. Keepon was developed by Hideki Kozima (小嶋 秀樹 Kojima Hideki?) while at the National Institute of Information and Communications Technology (NICT) in Kyoto, Japan. Keepon has four motors, a rubber skin, two cameras in its eyes, and a microphone in its nose.
[Source: Wikipedia]
Total degrees of freedom = 4